Can you give me more explanation for each question? Especially how to identify the type of interparticle force of each substance(Dispersion Forces, Dipole-dipole Forces, Hydrogen Bonding, and Ionic Bonding). And how to identify the substance have the highest or lowest boiling point.

2. Which of the following has dispersion forces as its only intermolecular force? A) CH4 B) HCl C) C6H13NH2 D) NaCl E) CH3Cl

3. What types of intermolecular forces exist between NH3 and H2S?

A) dispersion forces and dipole-dipole forces

B) dispersion forces

C) dispersion forces and hydrogen bonds

D) dispersion forces, hydrogen bonds, and dipole-dipole forces

E) dispersion forces, hydrogen bonds, and ion-dipole forces

7. Some things take longer to cook at high altitudes than at low altitudes because ________.

A) water boils at a lower temperature at high altitude than at low altitude

B) water boils at a higher temperature at high altitude than at low altitude

C) heat isn't conducted as well in low-density air

D) natural gas flames don't burn as hot at high altitudes

E) there is a higher moisture content in the air at high altitude

9. On a phase diagram, the critical pressure is ________.

A) the pressure required to melt a solid

B) the pressure below which a substance is a solid at all temperatures

C) the pressure above which a substance is a liquid at all temperatures

D) the pressure at which a liquid changes to a gas

E) the pressure required to liquefy a gas at its critical temperature

10. In the smectic A liquid-crystalline phase, ________.

A) the molecules are aligned along their long axes, with no ordering with respect to the ends of the molecules

B) the molecules are arranged in sheets, with their long axes parallel and their ends aligned as well

C) the molecules are aligned with their long axes tilted with respect to a line perpendicular to the plane in which the molecules are stacked

D) disk-shaped molecules are aligned through a stacking of the disks in layers

E) the molecules are oriented in a totally random fashion

12. Which one of the following should have the lowest boiling point? A) CH4 B) PCl3 C) C2H5COOH D) LiCl E) Cl2S